Sparmax Single Piston oil-less Compressor in a cabinet - TC-501SC 

1/8 horsepower motor provides 25 to 32 psi. of consistent pressure for up to three hours of continuous operation. No messy lubrication with this compressor.Includes a moisture separator (with air bleed) and a thermal safety switch to prevent accidental overheating. This compressor runs continuously when switched on. When the airbrush is not being operated, air bleeds off at the filter base.